专题四“顺藤摸瓜”——明辨类题目Ⅰ.体验高考(·课标Ⅰ卷)Passengerpigeons(旅鸽)onceflewovermuchoftheUnitedStatesinunbelievablenumbers.Writtenaccountsfromthe18thand19thcenturiesdescribedflocks(群)solargethattheydarkenedtheskyforhours.Itwascalculatedthatwhenitspopulationreacheditshighestpoint，thereweremorethan3billionpassengerpigeons－anumberequalto24to40percentofthetotalbirdpopulationintheUnitedStates，makingitperhapsthemostabundantbirdintheworld.Evenaslateas1870whentheirnumbershadalreadybecomesmaller，aflockbelievedtobe1milewideand320miles(about515kilometers)longwasseennearCincinnati.Sadly，theabundanceofpassengerpigeonsmayhavebeentheirundoing.Wherethebirdsweremostabundant，peoplebelievedtherewasaneverlastingsupplyandkilledthembythethousands.Commercialhuntersattractedthemtosmallclearingswithgrain，waiteduntilpigeonshadsettledtofeed，thenthrewlargenetsoverthem，takinghundredsatatime.Thebirdswereshippedtolargecitiesandsoldinrestaurants.Bytheclosingdecadesofthe19thcentury，thehardwoodforestswherepassengerpigeonsnestedhadbeendamagedbyAmericans'needforwood，whichscattered(驱散)theflocksandforcedthebirdstogofarthernorth，wherecoldtemperaturesandspringstormscontributedtotheirdecline.Soonthegreatflocksweregone，nevertobeseenagain.In1897，thestateofMichiganpassedalawprohibitingthekillingofpassengerpigeons，butbythen，nosizableflockshadbeenseeninthestatefor10years.ThelastconfirmedwildpigeonintheUnitedStateswasshotbyaboyinPikeCounty，Ohio，in1900.Foratime，afewbirdssurvivedunderhumancare.Thelastofthem，knownaffectionatelyasMartha，diedattheCincinnatiZoologicalGardenonSeptember1,1914.【语篇导读】本文叙述了旅鸽逐渐消失的过程。1．Inthe18thandearly19thcenturies，passengerpigeons________.A．werethebiggestbirdintheworldB．livedmainlyinthesouthofAmericaC．didgreatharmtothenaturalenvironmentD．werethelargestbirdpopulationintheUS解析事实细节题。根据文章第一段所述在18和19世纪，美国大群的旅鸽飞起来可以遮住天空几个小时，所以美国旅鸽的数量是最大的，故选D。答案D2．Theunderlinedword“undoing”probablyreferstothepigeons'________.A．escapeB．ruinC．liberationD．evolution解析词义猜测题。根据文章第三段中“Wherethebirdswereabundant...bythethousands”可知旅鸽遭到捕杀，所以ruin和undoing词义相似，故选B。答案B3．Whatwasthemainreasonforpeopletokillpassengerpigeons?A．Toseekpleasure.B．Tosaveotherbirds.C．Tomakemoney.D．Toprotectcrops.解析事实细节题。根据文章第二段中“Commercialhuntersattractedthem...soldinrestaurants”可知旅鸽遭到捕杀的主要原因是捕杀者要赚钱。故选C。答案C4．WhatcanweinferaboutthelawpassedinMichigan?A．Itwasignoredbythepublic.B．Itwasdeclaredtoolate.C．Itwasunfair.D．Itwasstrict.解析推理判断题。根据文章最后一段中“In1897，thestateof...for10years”可知通过法律后的10年，鸽群数量仍然不多，所以制定法律为时已晚，故选B。答案BⅡ.仿真、模拟Passage1体裁：议论文话题：历史故事时间：6分钟Themoviesjustwouldn'tbethesamewithoutthewarmbutterytasteofpopcorn.Amazingly，thisdelicioustreatstarteditslifeasacornkernel(玉米粒)—andnotfromjustanycorn.PopcornisatypeofsweetcornthatwasoriginallygrowninMexicoandspreadtoChina，Indiaandelsewhere.Itistheonlykindofcornthatwillpop.Today，mostoftheworld'spopcornisgrownintheUnitedStates.Everypopcornkernelcontainsatinydropofwater，surroundedbysoftstarch(淀粉)．Whenthepopcornisheated，thewaterturnsintosteam.Thisputspressureonthesurroundinghardkernel，forcingittoexplode.Thesoft...
